Oilfield Couplings

GRADE 5CT SPECIFICATION COLOR SPECIFICATION
H-40 GROUP ONE UNPAINTED OR BLACK
J-55, K-55 GROUP ONE GREEN
N-80 GROUP ONE RED
L-80 GROUP TWO RED WITH BROWN BAND
C-90 GROUP TWO PURPLE
C-95 GROUP TWO BROWN
P110 GROUP THREE WHITE
Q-125 GROUP FOUR ORANGE

API EXTERNAL UPSET END (EUE) TUBING COUPLINGS

CPLG SIZE PIPE SIZE COUPLING O.D. MINIMUM LENGTH THREADS PER INCH WEIGHT CTN QTY
REGULAR SPECIAL CLEARANCE REGULAR SPECIAL CLEARANCE SPECIAL BEVEL
1.050 3/4 1.660 ------- 3 1/4 10 .84 ------- ------- 1500
1.315 1 1.990 ------- 3 1/2 10 1.26 ------- ------- 1200
1.660 1 1/4 2.200 ------- 3 3/4 10 1.49 ------- ------- 800
1.900 1 1/2 2.500 ------- 3 7/8 10 1.85 ------- ------- 600
2 3/8 2 3.063 2.910 4 7/8 8 3.42 2.38 3.29 1144
2 7/8 2 1/2 3.668 3.460 5 1/4 8 5.29 3.45 5.07 792
3 1/2 3 4.500 4.180 5 3/4 8 9.02 5.22 8.55 448
4 3 1/2 5.000 ------- 6 8 10.62 ------- ------- 245
4 1/2 4 5.563 ------- 6 1/4 8 13.31 ------- ------- 210

API NONUPSET END (NUE) TUBING COUPLINGS

CPLG SIZE PIPE SIZE COUPLING O.D. MINIMUM LENGTH THREADS PER INCH WEIGHT CTN QTY
REGULAR SPECIAL CLEARANCE REGULAR SPECIAL CLEARANCE SPECIAL BEVEL
1.315 1 1.660 ------- 3 1/4 10 .84 ------- ------- 1500
1.660 1 1/4 2.054 ------- 3 1/2 10 1.26 ------- ------- 1000
1.900 1 1/2 2.200 ------- 3 3/4 10 1.25 ------- ------- 800
2 3/8 2 2.875 ------- 4 1/4 10 2.82 ------- 2.69 1144
2 7/8 2 1/2 3.500 ------- 5 1/8 10 5.15 ------- 4.90 792
3 1/2 3 4.250 ------- 5 5/8 10 8.17 ------- 7.73 256
4 3 1/2 4.750 ------- 5 3/4 8 9.57 ------- ------- 360
4 1/2 4 5.200 ------- 6 1/8 8 10.76 ------- ------- 235

API BUTTRESS THREAD CASING COUPLINGS

PIPE SIZE COUPLING O.D. MINIMUM LENGTH WEIGHT CARTON QUANTITY
REGULAR SPECIAL CLEARANCE REGULAR SPECIAL CLEARANCE
4 1/2 5.000 4.875 8 7/8 10.11 7.67 196
5 5.563 5.375 9 1/8 12.99 8.81 196
5 1/2 6.050 5.875 9 1/4 14.14 9.84 136
6 5/8 7.390 7.000 9 5/8 24.46 12.44 100
7 7.656 7.375 10 23.22 13.82 84
7 5/8 8.500 8.125 10 3/8 34.84 20.45 64
8 5/8 9.625 9.125 10 5/8 45.94 23.77 52
9 5/8 10.625 10.125 10 5/8 50.99 26.47 40
10 3/4 11.750 11.250 10 5/8 56.68 29.49 45
11 3/4 12.750 ------- 10 5/8 61.74 ------- 40
13 3/8 14.375 ------- 10 5/8 69.95 ------- 25
16 17.000 ------- 10 5/8 87.56 ------- 20
18 5/8 20.000 ------- 10 5/8 138.03 ------- 12
20 21.000 ------- 10 5/8 110.33 ------- 8
Note:  All buttress couplings are 5 threads per inch with 4 1/2 thru 13 3/8 taper tapped 3/4" per foot on diameter and 16" thru 20" taper tapped 1" per foot.

API ROUND THREAD CASING COUPLINGS

PIPE SIZE COUPLING O.D. MINIMUM LENGTH WEIGHT CARTON QUANTITY
SHORT LONG SHORT LONG SHORT LONG
4 1/2 5.000 6 1/4 7 8.05 9.07 294 294
5 5.563 6 1/2 7 3/4 10.18 12.56 252 210
5 1/2 6.050 6 3/4 8 11.44 14.03 216 180
6 5/8 7.390 7 1/4 8 3/4 19.97 24.82 120 92
7 7.656 7 1/4 9 18.34 23.67 120 100
7 5/8 8.500 7 1/2 9 1/4 26.93 34.23 80 64
8 5/8 9.625 7 3/4 10 35.58 47.48 60 60
9 5/8 10.625 7 3/4 10 1/2 39.51 55.77 50 36
10 3/4 11.750 8 10 1/2 45.53 62.02 45 36
11 3/4 12.750 8 10 1/2 49.61 67.39 40 40
13 3/8 14.375 8 10 1/2 56.23 76.63 25 20
16 17.000 9 11 79.00 96.55 20 20
18 5/8 20.000 9 ------- 118.94 ------- 8 -------
20 21.000 9 11 1/2 98.25 126.74 8 8
Note:  Both LTC and STC couplings are 8 threads per inch and taper tapped 3/4" per foot on diameter.

IMPROVED BUTTRESS THREAD TUBING COUPLINGS

CPLG SIZE PIPE SIZE COUPLING O.D. MINIMUM LENGTH THREADS PER INCH WEIGHT CARTON QUANTITY
REGULAR SPECIAL CLEARANCE REGULAR SPECIAL CLEARANCE SPECIAL BEVEL
2 3/8 2 2.875 2.700 8 1/2 8 5.46 3.62 ------- 644
2 7/8 2 1/2 3.500 3.220 8 1/2 8 8.14 4.59 ------- 400
3 1/2 3 4.250 3.865 8 1/2 8 11.74 5.83 ------- 248
4 3 1/2 4.750 4.400 9 8 14.17 7.75 ------- -------
4 1/2 4 5.200 4.920 9 1/2 8 15.72 9.73 ------- 196
Note: All USS Improved Buttress couplings are 8 threads per inch.   Regular O.D. and special clearance furnished with 20o bevel both ends.

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